Add file_extension language_info
Add file_extension language_info

Phobia0ptik/IRkernel,rgbkrk/IRkernel,ibm-et/IRkernel,JanSchulz/IRkernel,ChinaQuants/IRkernel,ibm-et/IRkernel,gdtm86/IRkernel,elaOnMars/IRkernel,chendaniely/IRkernel,mikecroucher/IRkernel